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Li Li,Tianjiao Jiang 경남대학교 극동문제연구소 2023 ASIAN PERSPECTIVE Vol.47 No.1
Chinese scholars’ research on “Indo-Pacific Strategy” has undergone two shifts. Firstly, they began to pay limited attention to the Indo-Pacific concept and the US Indo-Pacific regional strategy in 2013. With 2017 and 2018 as the turning point, the attention to the Indo-Pacific strategy shows a significant increase. Secondly, regarding the scholars’ judgment of the Indo-Pacific strategy, since the end of 2019, they reach a consensus on their assessment of the strategy, especially on its threat to China. The two main reasons that drove the above shifts were the enrichment of the Indo-Pacific Strategy by the United States and China’s perception of India’s attitudes. China’s official responses to the strategy have shown a co-moving rhythm with scholars’ research, shifting from a more open and neutral attitude toward the concept to a critical one. Against the background of America’s continuing effort to implement the Indo-Pacific strategy, China’s policy responses can focus on three aspects: do a good job of itself, handle China-US relations peacefully and cooperatively, and break down the group politics.
Li, Xia,Guo, Qiang,Zhang, Tianjiao,Qian, Junzhi,Tan, Xiaolin Korean Chemical Society 2013 대한화학회지 Vol.57 No.5
A type of polycyclotriphosphazene derivative (PCTPD), hexasulfanilic acid polycyclotriphosphazene (HSACP) and HSACP grafting SPEEK, sulfonated poly[2-(petachloropolycyclotriphosphazene-oxy)] etheretherketone (SPPSACPEEK) were synthesized, which were characterized by FTIR and $^{31}P$ NMR. Then three types of composite membranes such as HSACP grafting SPEEK, HSACP blending SPEEK, and nano $Y_2O_3$ doping and HSACP grafting SPEEK, respectively, were continuously prepared by solution-casting method. Comparing to SPEEK membranes with different amount of HSACP grafted or blended, grafting 15 wt% HSACP and doping 10 wt% nano $Y_2O_3$ SPEEK membrane conducted outstanding overall behavior of proton conductivity reaching $3.18 {\times}10^{-2}$ S/cm at $90^{\circ}C$ which was merely junior to SPEEK with 15 wt% HSACP grafted, methanol permeability coefficient getting $9.46{\times}10^{-8}cm^2{\cdot}s^{-1}$, swelling degree of 20.9% and solid residue of 98.98% which was superior to all specimen.
Bird's Eye View Semantic Segmentation based on Improved Transformer for Automatic Annotation
( Tianjiao Liang ),( Weiguo Pan ),( Hong Bao ),( Xinyue Fan ),( Han Li ) 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.8
High-definition (HD) maps can provide precise road information that enables an autonomous driving system to effectively navigate a vehicle. Recent research has focused on leveraging semantic segmentation to achieve automatic annotation of HD maps. However, the existing methods suffer from low recognition accuracy in automatic driving scenarios, leading to inefficient annotation processes. In this paper, we propose a novel semantic segmentation method for automatic HD map annotation. Our approach introduces a new encoder, known as the convolutional transformer hybrid encoder, to enhance the model's feature extraction capabilities. Additionally, we propose a multi-level fusion module that enables the model to aggregate different levels of detail and semantic information. Furthermore, we present a novel decoupled boundary joint decoder to improve the model's ability to handle the boundary between categories. To evaluate our method, we conducted experiments using the Bird's Eye View point cloud images dataset and Cityscapes dataset. Comparative analysis against state-of-the-art methods demonstrates that our model achieves the highest performance. Specifically, our model achieves an mIoU of 56.26%, surpassing the results of SegFormer with an mIoU of 1.47%. This innovative promises to significantly enhance the efficiency of HD map automatic annotation.
Two Indolocarbazole Alkaloids with Apoptosis Activity from a Marine-derived Actinomycete Z2039-2
Rui Liu,Tianjiao Zhu,Dehai Li,Jingyan Gu,Wei Xia,Yuchun Fang,HongbingLiu,Weiming Zhu,Qianqun Gu 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.3
Bioassay-guided fractionation of the EtOAc extract from the fermentation broth of a marinederived actinomycete Z2039-2 led to the isolation of two known indolocarbazole alkaloids, K252c (1) and arcyriaflavin A (2). 1 and 2 exhibited moderate cytotoxic activities against the K562 cell line, and induced apoptotic activities at 10 and 100 µM, respectively. This is the first report on the significant apoptosis inducing effect of indolocarbazole alkaloids against K562 cancer cells.
Hong Ren,Rui Liu,Li Chen,Tianjiao Zhu,Wei Ming Zhu,Qian Qun Gu 대한약학회 2010 Archives of Pharmacal Research Vol.33 No.4
Two new hetero-spirocyclic γ-lactams, azaspirofurans A (1) and B (2), had been isolated from a marine sediment-derived fungus Aspergillus sydowi D2-6. Their structures were determined by the chemical evidence and spectral analyses. Compound 1 exhibited cytotoxicity against A549 cell line with the IC50 value of 10 μM by MTT method.
Fan Zhou,Fujie Nie,Tianjiao An,Bing Ma,Yuanchun Li 제어·로봇·시스템학회 2022 International Journal of Control, Automation, and Vol.20 No.10
This paper presented an original decentralized fault tolerant control approach for modular manipulators which based on adaptive dynamic programming (ADP) algorithm. First, the dynamic model of modular manipulators is established via joint torque feedback technique. Then, the fault tolerant controller is designed which composes of model-based compensation controller, observer-based fault tolerant controller and ADP-based optimal controller. According to ADP algorithm, the Hamiltonian-Jacobi-Bellman (HJB) equation can be tackled by critic neural network (NN). The closed-loop modular manipulators system is guaranteed asymptotic stable based on Lyapunov theory. Experiments are performed to verify the proposed method, and the results have guaranteed its effectiveness.
Two Indolocarbazole Alkaloids with Apoptosis Activity from a Marine-derived Actinomycete Z$_2$039-2
Liu, Rui,Zhu, Tianjiao,Li, Dehai,Gu, Jingyan,Xia, Wei,Fang, Yuchun,Zhu, Weiming 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.3
Bioassay-guided fractionation of the EtOAc extract from the fermentation broth of a marine-derived actinomycete Z$_2$039-2 led to the isolation of two known indolocarbazole alkaloids, K252c (1) and arcyriaflavin A (2). 1 and 2 exhibited moderate cytotoxic activities against the K562 cell line, and induced apoptotic activities at 10 and 100 ${\mu}$M, respectively. This is the first report on the significant apoptosis inducing effect of indolocarbazole alkaloids against K562cancer cells.
Penipyrols A–B and peniamidones A–D from the mangrove derived Penicillium solitum GWQ-143
Wenqiang Guo,Xianglan Kong,Tianjiao Zhu,Qian Qun Gu,Dehai Li 대한약학회 2015 Archives of Pharmacal Research Vol.38 No.8
Chemical investigation the extract of Penicillium solitum GWQ-143 led to yield four new compounds penipyrols A–B (1–2) and peniamidones A–B (3–4), together with peniamidones C–D (5–6), which had been previously described as synthetic intermediates, not obtained from natural resource. The structures of those new compounds were established through extensive spectroscopic analysis. Compounds 1–6 exhibited great radical scavenging activities against DPPH with IC50 values ranged from 4.7 to 15.0 lM.
Zhengmin Yang,Yang Shi,Jiaqi Shuai,Yanlin Li,Tianjiao Sun,Mengjie Chen,Changping Lv 한국원예학회 2021 원예과학기술지 Vol.39 No.5
To protect and identify the varieties of tree peony, DNA fingerprints were constructed and genetic diversity was analyzed with simple sequence repeat markers with tailed primer M13 (TP-M13-SSR) technology in 18 local tree peony varieties in Hunan Province of China. Twenty-four out of 131 pairs of polymorphic primers showing stable amplification and good capillary electrophoresis peaks were selected. The Shannon information indexes (I), polymorphism information contents (PICs), and differentiation rates of eight primer pairs were higher than average. Unweighted pair-group method with arithmetic mean (UPGMA) dendrograms indicated that the genetic similarity coefficients of the 18 Hunan tree peony varieties ranged from 0.57 to 0.86, and Paeonia suffruticosa ‘Ning Xiang Hong’ (0.57) was classified as a separate group. The 18 varieties could be completely distinguished with two pairs of primers. The variety names, flower types, fingerprinting codes, and other information were included in the quick response (QR) code, which provides a basis for the molecular identification of Hunan tree peony varieties. The construction of DNA fingerprinting of tree peony varieties in Hunan is important for its protection.
Overview of CSNS tantalum cladded tungsten solid Target-1 and Target-2
Shaohong Wei,Ruiqiang Zhang,Quan Ji,Changfeng Li,Bin Zhou,Youlian Lu,Jun Xu,Ke Zhou,Chongguang Zhao,Ning He,Wen Yin,Tianjiao Liang 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.5
A solid tungsten target was used at the China Spallation Neutron Source (CSNS) with 100 kW protonbeam power. To improve the lifetime, hot isostatic pressing (HIP) process was selected to bond tantalumcladding with tungsten plates. Radioactive isotope 182Ta, an activation product of tantalum, was found inthe cooling water after a period of operation, however, no radioactive isotopes of 187W was found, whichshows the tantalum layer remained mostly intact. The CSNS Target-1 had been operating safely for threeyears and was replaced by Target-2 in August 2020